code: def __init__(self):
      ImageUtilsBackend.__init__(self)
  
file_path: nnabla/python/src/nnabla/utils/image_utils/backend_events/cv2_backend.py
imports: from __future__ import absolute_import, division
  import cv2
  import numpy
  from nnabla.logger import logger
  from .common import upscale_pixel_intensity, check_type_and_cast_if_necessary, _imread_before, _imread_after, _imsave_before, _imresize_before, _imresize_after
  from .image_utils_backend import ImageUtilsBackend
label_desc: Use image node_id 1 to create a new Cv2Backend object from inherited base classes: ImageUtilsBackend with example: obj = Cv2Backend()